Answer :
Final answer:
Rectification is not a common application for buck-boost transformers, which are used for voltage regulation, providing isolation, and power factor correction but not for converting AC to DC. Therefore the correct answer is 4) Rectification.
Explanation:
The correct answer to the question Which of the following is not a common buck-boost transformer application? is option 4) Rectification. Buck-boost transformers are used for voltage regulation, providing isolation, and sometimes for power factor correction.
However, they are not used for rectification, which is the process of converting alternating current (AC) to direct current (DC), typically performed by electronic components such as diodes or rectifier circuits, not by transformers. A buck-boost transformer is used for voltage regulation and power factor correction.
It can either step up or step down the voltage, making it suitable for these applications. Additionally, it can provide isolation between input and output circuits, making it useful for applications that require electrical isolation.